[cleanup] Remove RTSP and MMS support (#17030)

Authored by: seproDev

yt_dlp/extractor/commonprotocols.py

@@ -29,34 +29,6 @@ class RtmpIE(InfoExtractor):
         }
 
 
-class MmsIE(InfoExtractor):
-    IE_DESC = False  # Do not list
-    _VALID_URL = r'(?i)mms://.+'
-
-    _TEST = {
-        # Direct MMS link
-        'url': 'mms://kentro.kaist.ac.kr/200907/MilesReid(0709).wmv',
-        'info_dict': {
-            'id': 'MilesReid(0709)',
-            'ext': 'wmv',
-            'title': 'MilesReid(0709)',
-        },
-        'params': {
-            'skip_download': True,  # rtsp downloads, requiring mplayer or mpv
-        },
-    }
-
-    def _real_extract(self, url):
-        video_id = self._generic_id(url)
-        title = self._generic_title(url)
-
-        return {
-            'id': video_id,
-            'title': title,
-            'url': url,
-        }
-
-
 class ViewSourceIE(InfoExtractor):
     IE_DESC = False
     _VALID_URL = r'view-source:(?P<url>.+)'